I think this version of WP Greet Box is ground breaking enough to bump the version up to 4.0. To be honest, the reason version 4.0 came out so early is because I just found out 3 days ago (via Google Alerts) that I have a new competitor, Referrer Detector, written by Phan Van An. He seems like a really nice guy (he mentions my name repeatedly in the post), but he could have at least contacted me about co-authoring before forking the code :). With that said, I checked out Referrer Detector and decided to implement some of its wonderful changes in WP Greet Box and expand WP Greet Box to be able to work with WPMU (Thank you Andy Beard for your suggestion).